Perimeter formulas 

Here, find the perimeter formulas for some regular polygons

A regular polygon is a polygon with equal sides and equal angles.

If we let s be the length of one sides, we can find the perimeter as demonstrated in this lesson

Equilateral triangle:

Equilateral triangle with side s


Perimeter = s + s + s

Perimeter = 3 × s

For example, if s = 4 inches,   Perimeter = 3 × 4 = 12 inches

Rhombus:

Rhombus with side s


Perimeter = s + s + s + s

Perimeter = 4 × s

For example, if s = 5 meters,   Perimeter = 4 × 5 = 20 meters

Square:

Square with side s


Perimeter = s + s + s + s Perimeter = 4 × s

For example, if s = 6 meters,   Perimeter = 4 × 6 = 24 meters

Regular pentagon:

Regular pentagon with side s


Perimeter = s + s + s + s + s

Perimeter = 5 × s

For example, if s = 8 feet,   Perimeter = 5 × 8 = 40 feet

Regular hexagon:

Regular hexagon with side s


Perimeter = s + s + s + s + s + s

Perimeter = 6 × s

For example, if s = 5 feet,   Perimeter = 6 × 5 = 30 feet







Recent Articles

  1. Modeling Multiplication

    Nov 15, 18 05:01 PM

    Modeling multiplication with number counters - Learning multiplication is fun!

    Read More

New math lessons

Your email is safe with us. We will only use it to inform you about new math lessons.

            Follow me on Pinterest





Recent Lessons

  1. Modeling Multiplication

    Nov 15, 18 05:01 PM

    Modeling multiplication with number counters - Learning multiplication is fun!

    Read More

  Our Top Pages

Formula for percentage

Compatible numbers

Basic math test

Basic math formulas

Types of angles

Math problem solver

Algebra word problems

Surface area of a cube

Finding the average 

Scale drawings

Tough Algebra Word Problems.

If you can solve these problems with no help, you must be a genius!


Everything you need to prepare for an important exam!

K-12 tests, GED math test, basic math tests, geometry tests, algebra tests. 


Real Life Math Skills

Learn about investing money, budgeting your money, paying taxes, mortgage loans, and even the math involved in playing baseball.

 Recommended

Scientific Notation Quiz

Types of Angles Quiz

Graphing Slope Quiz

Adding and Subtracting Matrices Quiz  

Factoring Trinomials Quiz 

Solving Absolute Value Equations Quiz  

Order of Operations Quiz